[英]Dynamic mapping of all QT signals of one object to one slot
I want to connect all signals of one QObject to a certain slot. 我想将一个QObject的所有信号连接到某个槽。
The slot looks something like this: 插槽看起来像这样:
void SignalIntercepter::signalFired()
{
std::cout << "Signal is fired!" << std::endl;
}
The following code is where the QObject will be passed to: 以下代码是将QObject传递给的位置:
void SignalIntercepter::handleObject(QObject* object)
{
const QMetaObject *me = object->metaObject();
int methodCount = me->methodCount();
for(int i = 0; i < methodCount; i++)
{
QMetaMethod method = me->method(i);
if(method.methodType() == QMetaMethod::Signal)
{
// How do I connect this signal to the slot?
// QObject::connect(object, ..., ..., ...);
}
}
}
have a look at 看一下
const char * QMetaMethod::signature() const
then you should be able to use it like 然后你应该可以像使用它一样
QObject::connect(object, method->signature(), this, SLOT(signalFired()));
you might need to add "2"
before the method->signature()
call because SIGNAL(a)
makro is defined SIGNAL(a) "2"#a
as mentioned Is it possible to see definition of Q_SIGNALS, Q_SLOT, SLOT(), SIGNAL() macros? 您可能需要在method->signature()
调用之前添加"2"
,因为SIGNAL(a)
makro定义为SIGNAL(a) "2"#a
如上所述是否可以看到Q_SIGNALS,Q_SLOT,SLOT()的定义,SIGNAL()宏? (Qt) (QT)
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